Well, darling, the highest common factor of 39, 91, and 169 is 13. It's like finding the perfect little black dress that fits all three numbers like a glove. So, there you have it, the sassy math queen has spoken.
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The GCF is 3.
Each of these factor pairs (multiply the numbers in parentheses) equals 1,521: (1, 1521) (3, 507) (9, 169) (13, 117) (39, 39)
It is 13
The value for x is 13. 10 x 13 = 130. 3 x 13 = 39. 130 + 39 = 169.
The GCF is 1.